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Red Hat 8 RHSA-2021:1762-01 Moderate: virt:rhel Information Disclosure

red hat
Calendar Grey May 18, 2021
Dist Redhat Esm H88
Canonical has released a revision for the kube:ubuntu and kube-dev extensions with notable security implications, tackling essential vulnerabilities.
An update for the virt:rhel and virt-devel:rhel modules is now available for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems.
Security Fix(es):
* libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.c (CVE-2020-25637)
* QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c (CVE-2020-27821)
* QEMU: ide: atapi: OOB access while processing read commands (CVE-2020-29443)
* QEMU: heap buffer overflow in iscsi_aio_ioctl_cb() in block/iscsi.c may lead to information disclosure (CVE-2020-11947)
* QEMU: reachable assertion failure in net_tx_pkt_add_raw_fragment() in hw/net/net_tx_pkt.c (CVE-2020-16092)
* QEMU: infinite loop in e1000e_write_packet_to_guest() in hw/net/e1000e_core.c (CVE-2020-25707)
* QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.c (CVE-2020-25723)
* QEMU: e1000e: infinite loop scenario in case of null packet descriptor (CVE-2020-28916)
* QEMU: slirp: out-of-bounds access while processing ARP/NCSI packets (CVE-2020-29129, CVE-2020-29130)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat bug fix moderate severity heap overflow information disclosure libvirt KVM update qemu virt:rhel qemu security

References

https://access.redhat.com/security/cve/CVE-2020-11947 https://access.redhat.com/security/cve/CVE-2020-16092 https://access.redhat.com/security/cve/CVE-2020-25637 https://access.redhat.com/security/cve/CVE-2020-25707 https://access.redhat.com/security/cve/CVE-2020-25723 https://access.redhat.com/security/cve/CVE-2020-27821 https://access.redhat.com/security/cve/CVE-2020-28916 https://access.redhat.com/security/cve/CVE-2020-29129 https://access.redhat.com/security/cve/CVE-2020-29130 https://access.redhat.com/security/cve/CVE-2020-29443 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: SLOF-20191022-3.git899d9883.module+el8.3.0+6423+e4cb6418.src.rpm hivex-1.3.18-20.module+el8.3.0+6423+e4cb6418.src.rpm libguestfs-1.40.2-27.module+el8.4.0+9282+0bdec052.src.rpm libguestfs-winsupport-8.2-1.module+el8.3.0+6423+e4cb6418.src.rpm libiscsi-1.18.0-8.module+el8.1.0+4066+0f1aadab.src.rpm libnbd-1.2.2-1.module+el8.3.0+7353+9de0a3cc.src.rpm libvirt-6.0.0-35.module+el8.4.0+10230+7a9b21e4.src.rpm libvirt-dbus-1.3.0-2.module+el8.3.0+6423+e4cb6418.src.rpm libvirt-python-6.0.0-1.module+el8.3.0+6423+e4cb6418.src.rpm nbdkit-1.16.2-4.module+el8.3.0+6922+fd575af8.src.rpm netcf-0.2.8-12.module+el8.1.0+4066+0f1aadab.src.rpm perl-Sys-Virt-6.0.0-1.module+el8.3.0+6423+e4cb6418.src.rpm qemu-kvm-4.2.0-48.module+el8.4.0+10368+630e803b.src.rpm seabios-1.13.0-2.module+el8.3.0+7353+9de0a3cc.src.rpm sgabios-0.20170427git-3.module+el8.1.0+4066+0f1aadab.src.rpm supermin-5.1.19-10.module+el8.3.0+6423+e4cb6418.src.rpm
aarch64: hivex-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64.rpm hivex-debuginfo-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64.rpm hivex-debugsource-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64.rpm hivex-devel-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:1762-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1762
Issue date: 2021-05-18

Topic

An update for the virt:rhel and virt-devel:rhel modules is now availablefor Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat bug fix moderate severity heap overflow information disclosure libvirt KVM update qemu virt:rhel qemu security

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1384241 - The tar-in command does not allow restoring file capabilities

1798463 - cpu.shares for existing scopes under machine.slice are reset to default when creating a new scope after daemon-reload

1828952 - virt-customize --selinux-relabel (and other tools) do not work if SELINUXTYPE != targeted

1834281 - qemu-img convert abort when converting image with unaligned size

1837495 - [detach-device][s390x] can't detach virtio interface device by its address only (no mac)

1843852 - qemu core dumped: qemu-kvm: /builddir/build/BUILD/qemu-4.2.0/memory.c:1928: memory_region_notify_one: Assertion `entry->iova >= notifier->start && entry_end <= notifier->end' failed.

1846975 - Failed to boot up a s390x guest with virtio-blk-ccw if attaching a virtio-scsi-ccw bus in previous

1850680 - hypervisor-cpu-compare raises internal error for host-passthrough cpu model

1859494 - Report logical_name for disks without mounted file-system

1860283 - CVE-2020-16092 QEMU: reachable assertion failure in net_tx_pkt_add_raw_fragment() in hw/net/net_tx_pkt.c

1872854 - move the glusterfs dependency out of qemu-kvm-core to the glusterfs module

1874304 - nwfilter fails trying to bind/unbind rules for tap device that was/is in use by a different domain

1874780 - -prom-env does not validate input

1876297 - Setting "ramfb='on'" in the mdev device does not save in the guest xml and only works once

Read the Full Advisory

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